You may use the forms on this page if the following factors apply to your situation:

You have a child support order from Maricopa County and believe the amount of child support should be changed because there has been a substantial and continuing change in your circumstances.

Use the easy-to-use child support calculator at ezCourtForms to create a Child Support Worksheet.


  • To change spousal maintenance/support (alimony);
  • If your order is from a court outside this county (unless an attorney has advised you to);
  • If the reason you are requesting the change is because the living arrangements of the child(ren) have changed but the court order about Legal Decision Making (Custody) and parenting time has not.


Packets contain ALL forms and ALL instructions needed for this process.

To change (modify) child support using the standard process - Instructions and Forms - drmcs1

Or download instructions and forms individually


Instructions: How to complete the forms- drmcs11i


Procedures: How to file the forms - drmcs12p


Petition to Modify Child Support - Standard Process - drmcs11f


Affidavit of Financial Information (for you) - drosc13f


Affidavit of Financial Information (for the other party) - drosc13f

Disclaimer: The files included within the Law Library Resource Center's website are copyrighted. Users have permission to use the files, forms, and information for any lawful purpose. The files and forms are not intended to be used to engage in the unauthorized practice of law. The Court assumes no responsibility and accepts no liability tor actions taken by the users of these documents, including reliance on their contents. All files are under continual revision. If you are not using these forms right away, or if you plan to use them repeatedly, we strongly recommend that you check the site regularly to determine whether the files you are using have been updated.

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